Ignition lock for automobiles



C, A HERVEY. Eiiw'iTfON LOCK FOR AUTOMGBiLES WPUCA'HUN man MAR, 28.1921.

Inventor Witne Patented Feb. 28, 1922.

UNITED STATES GHQ-BLISS A. KEBVEY. 0F LANSING. MICHIGAN.

IGNITION LOOK FOB AUEOMOBILES.

To all whom it may concm'n:

Be it known that I, Cmmnns A. l'lnnvm', a citizen of the United States,rcsidin at Lansinf, in the county of Inghom and btntc o'f Mic iigan,have invented a new and useful Im rovement in Ignition Looks for Antonioiles, of which the following is o specification.

My invention relates to dcvicesfor lock-- ing the ignition ofautomobiles for their better protection, and its purposes are to make ndevice that can be readily constructed us :1inodificntiomoi an ordinarylock, but shall add to its security hy making it impossible to leave thekey in the lock hy providing an automatic means for the rejection of thekey.

I attain these purposes by the meansshown in the accompanying drawingsin which Fig. 1 is e diugruiumntic plan. view of my device, all theum-ssentinl ports and those of ordinary construction hein'g re moved.Fig. 2 is o plan view of the hook of Fig. I. Fig. 3 is a longitudinalsection of the operative part of my device. Fig. -l is a detail showing,the construction of the device for rejecting the key.

Referring to the drawings, 1 is the outer case or mom body of anyordinary ignition look. I donot describe this look in detail for theexact construction forms no port of my present invention which may heapplied to a number of diflerent locks of .the electrical type. 2 is atumbler lock of any ordinal well known construction, provided win nooperating pin 10, adapted to cngnizc with a notch 11 formed in a slide3. T ie slide 3 is provided with lon itndinal slots 12 and 13. The slot12 is udhpted to slide on the holl 15, which is used to secure the frontof the nose in position, and the slot L3 slides on the shaft 6 of thelocking lover 5. These thus serve'to retain the slide 3 in position. As'iring 4 engages with a notch 16 formed in the side of the-slide 3 andoperates to retain the bar "in the locked position as shown in Fig. 1.,except when druwnbatik by the action .oimthe key as will be more fullydescribed hereafter. An arm 7 extends parallel with the axis of theshaft 6, moving in'n slot 18 formed in the back of the case 1 andengaging with 11 spring 8, the action of which is to throwSpeolfiontlonoi Letters Patent. Patent'cd Feb. 23, 1922.

- Application filed March 28,1921.

Serial No. 456.375.

the arm T into the position shown at 9 in Fig. 1. when released laythrowing forward the slide 3 in the action of the lock 2 as will he morefully explained in connection with the operation of the device. A. lube19 is mounted concentrically with the lock 2 on the hack side of thecase and secured to it in any suitnhle munncr, as for instance, hr ascrew thread 20. A slide 2 is colistructrd to (it the key opening 22 inthe lock 2 und provided with ncylindrical body 23 which is pressedoutward by a spring 24 mounted in tho. opening of the tube 19. 23 IS thesin: it of the lighting mechanism which forms no part of my presentinvention and is. therefore, not descrihed in detail. 26

a slot in the hack of the dovire which also pertains to the lightingmerhuuism.

The operation of my device is as follows.

shown in Fig. l. the devire is in the position in which the car islocked by break mg or opening the circuit of the ignition incclmnism intheinunner well known to all those familiar with the art of constructingsuch looks. To unlock the our by closing the circuit. the locking pin 10is revolvcdhe. inserting and turning the key in the key opening 22 andengages with the notch 11 throwing theslide 3 to the left and releasingthe arm 7 which is then thrownforward to the position 9, by the actionof the spring 8, carrying with it the lever 5 and moving the mechanism17 of the ignition circuit into :osition to unlock the'ear by closingthe ignition circuit. In this position thearm 7 stands oppositenndagainst the end of the slide 3, which, therefore, cannot be operated bythe use of the key.

To look the car the lever 5 is moved over, carrying with it the arm 7,thus releasing the locking harfi which is thrown back into the positionshown in Fig. l by the notion of the spring 4.

It will be noted that in insertin the key the slide 21 must he pushedhac by the key. As soon, however, as the operation of unlocking iscompleted, the key will be nshed out, by thenction of the spring 24.

t is thus impossible to leave the key in the look after use. It willalso he noted that the key is not used to lock the car, but that theoperation of 0 onion; the ignition circuit with the handlia 5,automatically locks 2 mosses the car. which can only be iinlocked withthe key since the slide 3 prevents the switch 17 from being operated.

I claim as my invention and desire to secure b Letters Patent:

1. Tie combination with a switch for opening and closing an electriccircuit, and a lock for said switch provided w th a locking pin adaptedto be operated by said lock, of a slide adapted to be engaged with, andoperated by, said pin; a stop attached to .said switch and operatedthereby, said slide and stop being mutually interacting; a spring actingon said stop and switch to throw them into the position for engagingwith said slide, and a spring adapted to press said slide against saidstop.

2. The combination with a switch for opening and closing an electriccircuit, and a lock for said switch provided with a locking pin adaptedto be operated by said lock of a slide adapted to he engaged with, andoperated by, said pin; a stop attached to said switch and operatedthereby, said slide and stop being mutually interacting; a spring actingon said stop and switch to throw them into position foiflengaging withsaid slide; a spring adapted to press said slide against said stop, andmeans for automatically ejecting the key when said circuit. is closed.

3. The (:mnbinat-ion with a switch For opening and closing an electriccircuit and means comprising a push bar slidably mounted in the key holeof said lock and a spring operated upon said push bar to force it intosaid key hole.

4. The combination with a switch for opening and closing an electriccircuit provided with an operating handle and a lock for said switchprovided with a locking pin adapted to be operated by said lock, of aslide adapted to e engaged with, and operated by, said pin; astopattached to said switch zinfl operated thereby and adapted toengage. with and prevent the motion of said slide; a spring: acting onsaid stop and switch to throw them into the position for engaging withsaid slide; a spring adapted to press said slide againstsaid stop, andmeans for automatically ejecting the key when said circuit is cl0sed,sa.id means com prising a push bar slidably mounted in the key hole ofsaid lock and a spring operated upon said push bar to force it into saidkey hole.

."1. The combination with a switch for opening and closin g an electriccircuit )rorided with an operating handle and a lock for said switchprovided with a locking pin adapted to be operated by said lock, saidloclc being provided with a key hole adapted to receive a key foroperating said lock, of a slide adapted to be engaged and operated bysaid pin; a stop attached to said switch and operated thereby andadapted to engage with and prevent the motion of said slide; a springacting on said stop and switch to throw them into the position forengaging with saidslide; a spring adapted to press said slide againstsaid stop, and means for automatically ejectin the key when said circuitis closed, suit means comprising a push bar slid-ably mounted in the keyhole of said lock and a spring; operating upon saidpush bar to force itinto said key hole.

CHnR-LES A. HERVEY.

